I been trying all day.. and i cant seem to get this.. i read like 3 different guides, but still cant.. im sure its be who i stupid

I want to "click to move" my 4 Dks, from my Healer. But i cant figure out those guides, im used just control my tank, so this is totaly new to me.

What do I need...? well.. an very easy step by step thing for it, i been reading guides after guide today. lol..

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